struct Ivers {
  using Value_t = int;
  static std::string name(){ return "ivers"; }
  static std::string description(){
    return "The ivers parameter specifies the file version number.\n"
           "The default value is 0.";
  }
  static Value_t defaultValue(){ return 0; }
  static bool verify( const Value_t ivers ){ return ivers >= 0; }
};
